Low parasitic inductance capacitor with central terminals

Abstract

A capacitor has at least one plate of a first polarity and at least two plates of a second polarity, with a terminal electrically connected to the at least two plates of the second polarity such that the electrical plate connections are remote from an edge of the connected plates.

1. A capacitor, comprising:
 two or more conductive plates of a first polarity; 
 two or more conductive plates of a second polarity, wherein the two or more plates of a second polarity are interleaved with the two or more conductive plates of a first polarity and are separated from the two or more plates of a first polarity by a nonconductive material; 
 a terminal of a first polarity electrically connected to the two or more conductive plates of a first polarity in a location of the two or more plates of a first polarity that is remote from any edge of the two or more plates of a first polarity, such that the terminal of the first polarity electrically couples the two or more conductive plates of the first polarity together; and 
 a terminal of a second polarity electrically connected to the two or more conductive plates of a second polarity in a location of the two or more plates of a second polarity that is remote from any edge of the two or more plates of a second polarity, such that the terminal of the second polarity electrically couples the two or more conductive plates of the second polarity together. 
 
   
   
     2. The capacitor of  claim 1 , wherein the terminal of a first polarity is electrically connected to the two or more conductive plates of a first polarity in a location of the two or more plates such that the distance from the point of electrical connection to any edge is no less than ten percent of the distance from the point of electrical connection to any other edge of the two or more conductive plates of a first polarity. 
   
   
     3. The capacitor of  claim 1 , wherein the terminal of a second polarity is electrically connected to the two or more conductive plates of a second polarity in a location of the two or more plates such that the distance from the point of electrical connection to any edge is no less than ten percent of the distance from the point of electrical connection to any other edge of the two or more conductive plates of a second polarity. 
   
   
     4. The capacitor of  claim 1 , wherein the terminal of a first polarity is electrically connected to the two or more conductive plates of a first polarity in a location of the two or more plates such that the distance from the point of electrical connection to any edge is no less than twenty five percent of the distance from the point of electrical connection to any other edge of the two or more conductive plates of a first polarity. 
   
   
     5. The capacitor of  claim 1 , wherein the terminal of a second polarity is electrically connected to the two or more conductive plates of a second polarity in a location of the two or more plates such that the distance from the point of electrical connection to any edge is no less than twenty five percent of the distance from the point of electrical connection to any other edge of the two or more conductive plates of a second polarity. 
   
   
     6. The capacitor of  claim 1 , wherein at least one of the terminal of a first polarity and the terminal of a second polarity extends through the capacitor, providing a first and a second external electrical connection point for the terminal. 
   
   
     7. The capacitor of  claim 1 , wherein both the terminal of a first polarity and the terminal of a second polarity extend through the capacitor, providing a first and a second external electrical connection point for each terminal. 
   
   
     8. A capacitor, comprising:
 at least one plate of a first polarity; 
 at least two plates of a second polarity; 
 a terminal electrically connected to the at least two plates of the second polarity such that the electrical plate connections are remote from any edge of the connected plates and such that the terminal of the second polarity electrically couples the at least two plates of a second polarity together. 
 
   
   
     9. The capacitor of  claim 8 , wherein the terminal electrically connected to the at least two plates of a second polarity is connected in a location of the at least two plates such that the distance from the point of electrical connection to any edge is no less than ten percent of the distance from the point of electrical connection to any other edge of the at least two plates of a second polarity. 
   
   
     10. The capacitor of  claim 8 , wherein the terminal electrically connected to the at least two plates of a second polarity is connected in a location of the at least two plates such that the distance from the point of electrical connection to any edge is no less than twenty five percent of the distance from the point of electrical connection to any other edge of the at least two plates of a second polarity. 
   
   
     11. The capacitor of  claim 8 , wherein terminal electrically connected to the at least two plates of the second polarity extends through the capacitor, providing a first and a second external electrical connection point for the terminal. 
   
   
     12. The capacitor of  claim 8 , wherein the plates are in a stacked configuration. 
   
   
     13. The capacitor of  claim 8 , wherein the capacitor is a film-and-foil capacitor. 
   
   
     14. The capacitor of  claim 8 , wherein the capacitor is a metallized film capacitor.